Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Chondrichthyes is characterised by

  • Placoid scale

  • Placoid scale and ventral mouth

  • Ventral mouth

  • Ctenoid scale and ventral mouth


B.

Placoid scale and ventral mouth

Chodrichthyes (cartilaginous fishes) are marine. Their mouth is ventral and they have cartilaginous endoskeleton. Dermal placoid scales are present, e.g. Scoliodon, Pristis, etc.


2.

Which of the following cells in earthworm play a role similar to liver in vertebrates?

  • Amoebocytes

  • Mucocytes

  • Chloragogen cells

  • Epidermal cells


C.

Chloragogen cells

Chlorogogen cells are excretory in function. The chlorogogen cells take up excretory matter from the blood capillaries of the gut and from the coelomic fluid of the coelom. They also store glycogen and fat. So, these cells are analogous to the liver of vertebrates.


3.

In which of the following haemocyanin pigment is found?

  •  Lower invertebrates

  • Echinodermata

  • Insecta

  • Annelida


A.

 Lower invertebrates

In molluscs, the blood is colourless, often having copper containing blue respiratory pigment called haemocyanin.


4.

Which of the given option is correct regarding the statements?

Statement I: Cephalochordata bears notochord all along the body throughout life.

Statements II: Urochordate bears vertebral column only in the tail region throughout the life.

  • I wrong, II correct

  • I correct, II wrong

  • Both I and II are wrong

  • Both are correct


B.

I correct, II wrong

Cephalochordate has notochord all along the body through out life. But urochordates have a notochord in the tail region in their larval stage only.


5.

Animal cell differ from plant cell in possessing

  • Vacuoles

  • Centrosomes

  • Pastids

  • Mitochondria


B.

Centrosomes

The centrosome is a self-propagating cytoplasmic organelle located near the nucleus of an animal cell.


6.

Which of the following organelles does not contain RNA?

  • Plasmalemma

  • Ribosome

  • Chromosome

  • Nucleolus


A.

Plasmalemma

The plasmalemma series as the interface between the machinery in the interior of the cell and the Extracellular Fluid. (ECF) that bathes all cells. It is devoid of the ribosome.


7.

Notochord originates from

  • Mesoderm

  • Ectoderm

  • Endoderm

  • None of these


A.

Mesoderm

Notochord originates from mesoderm germ layer.


8.

Match the following and select the correct option.

List I List II
A. Cyclostomes 1. Hemichordata
B. Ayes 2. Urochordata
C. Tunicates 3. Agantha
D. Balanoglossus 4. Pisces
E. Osteichthyes 5. Tetrapod

  •  

    A B C D E
    3 5 2 1 4
  • A B C D E
    3 1 5 2 4
  • A B C D E
    1 2 3 4 5
  •  

    A B C D E
    2 3 4 1 5

A.

 

A B C D E
3 5 2 1 4

9.

Which is substitution of mitochondria in E. colt?

  • Golgi body

  • Mesosome

  • Ribosome

  • Glyoxysomes


C.

Ribosome

Mesosomes will be equivalent to mitochondria of eukaryotes because of respiratory enzyme present in aerobic bacteria.


10.

Dutrochet has given the concept about cell in

  • 1834

  • 1814

  • 1822

  • 1824


D.

1824

In 1824, Pene Dutrochet, a French scientist wrote that all animal and plant tissues were aggregate of globular cells.